ProgramMaster Logo
Conference Tools for MS&T22: Materials Science & Technology
Login
Register as a New User
Help
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting MS&T22: Materials Science & Technology
Symposium Dislocations in Ceramics: Processing, Structure, Mechanics, and Functionality
Presentation Title Atomistic and Multiscale Computational Analysis of the Connection between Dislocation Slip and Ionic Transport in Plastically Deformed Oxides
Author(s) Liming Xiong
On-Site Speaker (Planned) Liming Xiong
Abstract Scope SrTiO3, can be plastically deformable through dislocation slip without cracking. These dislocations carry high local stresses/strain, which may largely enhance the ion mobility and in turn, the material’s ionic conductivity. However, the limit of a plasticity-induced ionic transport enhancement is not achieved yet due to the lack of a commonly agreed knowledge on how ions hop nearby the complex defects, e.g., the dislocation pileup at a GB in SrTiO3, which spans from nano- to micro-meter level. To meet this challenge, here we present atomistic as well as concurrent atomistic-continuum computer simulations to probe the mechanisms underlying the interaction between the dislocation-mediated plastic flow and interstitial ion hopping along the buried GBs in SrTiO3. We will: (i) quantify the correlation between the defect-induced stresses, the local structure distortion and the ion mobility; (ii) identify the decisive factor that dictates the diffusivities of non-equilibrium GBs with long-range heterogeneities.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Atomistic and Multiscale Computational Analysis of the Connection between Dislocation Slip and Ionic Transport in Plastically Deformed Oxides
Charged Dislocations in Ionic Ceramics: Equilibrium and Kinetics
Conceptual Framework for Dislocation Mechanics in Ceramics
Dislocation-Modified Photoelectric Properties of Oxide Ceramics
Effects of Light Illumination on the Dislocation-mediated Plasticity in Single-crystalline ZnO
In Situ Observation of Fracture Dominated by a Single Dislocation and Its Governing Mechanics
Understanding and Engineering Dislocations in Oxides at Room Temperature

Questions about ProgramMaster? Contact programming@programmaster.org